Wrench



(No Model.)

H. BORNSTEIN.

WRENUH.

No. 338,707. Patented Mar. 30, 1886.

$4M mm f 2mg?!- *2 ATTORNEY N. PETERS PholwL'nMgnphor, Washinglnn, D. C.

UNITED STATES PATENT OFFICE.

HENRY BORNSTEIN, OF BOSTON, MASSACHUSETTS.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 338,707, dated March30, 1886.

Application filed January 18, 1886. Serial No. 188.868. (No model.)

To all whom it may concern.-

Be it known that I, HENRY BORNSTEIN, of Boston, in the county ofSuffolk, State of Massachusetts, have invented a certain new and usefulImprovement in Trenches, of which the following is a descriptionsufficiently full, clear, and exact to enable any person skilled in theart or science to which said invention appertains to make and use thesame, reference being had to the accompanying drawings, forming part ofthis specification, in which- Figure l isa side elevation vof myimproved wrench, a portion of the head and movable I jaw beingrepresented in section to show the edge of the screw-driver; and Fig. 2,a bottom plan View of the same, a portion of the head being representedas removed to show the side of the screw-driver.

Like letters of reference indicate corresponding parts in both thefigures of the drawings.

My invention relates to that class of wrenches which are known to thetrade as monkeywrenches, and it consists in a novel construction andarrangement of the parts, as

hereinafter more fully set forth and claimed,

the object being to produce a more effective and otherwise desirablearticle of this character than is now in ordinary use.

The nature and operation of the improvement will be readily understoodby all conversant with such matters from the following eXpla-n atiou:

In the drawings, A represents the handle, B the fixed jaw, and O themovable jaw. The movable jaw is mounted on the outer end of a bar, D,which is rectangular in cross-section, and passes through acorresponding mortise in the jaw B, as shown by the dottedlines 7;, itsinner end being round in cross-section, and provided exteriorly with aright-hand screw-thread, as shown at E. The fixed j aw B is providedwith two rearwardly-extending arms, H, arranged in parallelism with eachother, and carrying at their outer end the crosshead J, said jaw, arms,and cross-head being preferably cast integral or in one piece. They may,however, be made in separate pieces, if preferred, and properly united.One of the arms may also be omitted, if desired; or the space betweenthe arms may be so closed as to cover the screwE when deemed necessary.The inner end of the handle A is round in cross section, and providedexteriorly with a left-hand screw-thread, as shown at K. It is alsobored longitudinally from its inner end, and provided interiorly with aright-hand screw-thread for receiving the screw E. The cross-head J isalso bored transversely, and provided exteriorly with a left-handscrewthread for receiving the screw K, the handle A therefore forming anut for the screw E, and the cross-head J a nut for the handle K. Thehead of the wrench is drilled or bored on a line corresponding with thecentral axial lines of the bar D and handle A, to form a socket, i, forreceiving a screwdriver, M. The screwdriver is fiat or rectangular incross-section, and provided with a fixed collet or annular boss, 00,which rests on a shoulder, 2, when the screw-driver is withdrawn orhoused. A plug, f, is fitted into the outer end of the socket 2', saidplug being held in position by the set-screw a, and'provided with aslot, t, in which the screw-driver works. The Socket 2 is of greaterdiameter from the shoulderz to its outer end than it is from saidshoulder to its bottom or inner end,thescrewdriver being provided with ashank-piece, 0', which is fitted to work in the inner orsmaller portionof the socket. An elongated transverse slot, y, is formed in the bar D,near the jaw C, and fitted to work in said slot there is a pin, d, whichis secured firmly in the shank 'r of the screw-driver, and whichprojects beyond the sides of the bar D, as best seen in Fig. 2. A coiledspring, m, is disposed around the body of the screw-driver within thesocket 2', one end of said spring abutting against the inner end of theplugfand the other against the outer side of the collet m, the springacting expansively to force the screw-driver inwardly or to house it.

In the use of my improvement, the jaws B O and screw-driver M being inthe position shown in Fig. 1, if now the handle Ais turned tothe rightit will be withdrawn from or turned out of the cross-bar J, while at thesame time it will be turned onto the screw E of the shank D, therebycausing the jaw O to approach the jaw B with twice the rapidity it wouldtravel if but one screw were used, or'if the inner end of the handle Kwere adapted to revolve in but not to pass back and forth through thecross-head J. The handle A continuing to be turned, as described, andthe bar D to pass inwardly through its mortise in the jaw B, the pin dwill be brought into contact with said jaw, thereby compressing thespring m and forcing the screw-driver M outwardly through the slot t, orcausing it to protrude beyond the head of the wrench, in a manner whichwill be readily obvious without a more explicit description. The slot yis extended into the head of the wrench, as shown at h,to receive thepin (1, and thereby permit the jaws B O to be brought into closecontact,if desired.

It will be obvious that the screw-drivermay be caused to protrude to agreater or less distance beyond the head of the wrench by moving the jawG in or out accordingly, and also that the screw-driver will beautomatically housed or withdrawn as the jaws of the wrench areseparated ordistanced.

I do not confine myself to the use of the screw-driver, as this may beomitted, if desired, or to using a screw-driver in the socket 1',instead of some other implement, as a bradawl, bit, punch, or other toolmay be substituted for the screw-driver, if desired. The screwsE K mayalso be reversed, or E cut left-hand and K right-hand, if preferred, andproduce substantially the same results.

"When the screw-driver is not required for use, the pin d may beremoved, and thus preventit from being pushed outwardly from the socket,as described, and to enable the pin to be removed readily it may be soconstructed as to screw into the shank r, if desired. The pin may alsobe made of such length as to proshank D, if preferred. I

The plug f not only prevents the screwdriver from being entirelyexpelled from its socket, but being secured in said socket by the screwa, aids the pin 01 in causing the driver to rotate or revolve with thewrench when the driver is in use.

The socket'i and plug f form ways in which the screw-driver works; butit may be mounted in any other suitable ways either on or in the wrench,when provided with means for causing it to be extended and withdrawn,substantially as described, without departing from the spirit of thisportion of my invention.

Having thus explained my invention, what I claim is- 1. In a wrench, thecombination of the following instrumentalities, to wit: a fixed jaw, amovable jaw, a handle, and a screw-driver or other implement, said jawsbeing adapted to be closed or opened by turning said handle to the rightor left, as the case may be, and said screw-driver or other implementadapted to protrude from or be housed in the wrench by the act ofclosing or opening its jaws, as the case may be, substantially asdescribed.

2. In a wrench, the screw-driver M or other implement disposed in asocket or in suitable ways therein or thereon, and provided with thespring m, in combination with the jawsB 0, bar D, means for causing thejaws to close and open, means for causing the screw-driver to protrude,means for withdrawing or housing it, means for, preventing it from beingentirely expelled from its socket or ways, and means for causing it toturn with the wrench when the screw-driver is in use, substantially asset forth.

HENRY BORNSTEIN.

Witnesses:

O. A. SHAW, L. J. WHITE.

